Tank-car.



H. P. GROHN.

TANK CAR.

APPLICATION HLED ocrza, x915.

Lw man Patented Jan. 8,1918.

3 SHEETSSHEET I- H. P. GROHN.

TANK CAR.

APPLICATION FILED OCT. 28. was.

3 SHEETFPSHBET 2- H. P. GROHN.

TANK CAR.

APPLICATION FILED OCT. 28, 1915- 1,253,@Q8 Patented Jan. 8,1918.

I v 3 SEEETS-SHEET 3- 6 UNITED @TATE% PATENT @IFFIQE.

HENRY r. GROHN, or CHICAGO, ILLINOIS, ASSIGNOR TO CHARLES A. SHOEMAKER, or

' CHICAGO, ILLINOIS.

TANK-CAR.

Specification of Letters Patent.

Patented J an. 8, 1918.

Application filed October as, 1915; Serial no. 58,334.

To all whom it may concern:

Be it known that I, HENRY P. GRoHN, a citizen of theUnitedStates residing at Ghicago. in the county of Cook and State of Illinois, have invented a certain new and use :lnl Improvemei'it in Tank-Cars, of which the following is a full, clear, concise, and exact description, reference being had to'the accompanying drawings, forming a part of this specification.

My invention relates to tank cars and has for its general object the provision of means whereby the tank is anchored at one end in fixed relation to the underframe and is elsewhere mounted to permit it to move with respect to the underframe at its other end, whereby contraction and expansion of the tank with respect to the underframe is permitted. In the preferred embodiment of the invention the tank is anchored to one body bolster only and is free to move with respect to the other body bolster to permit of expan sion and contraction of the tank. In carrying out my invention the tank desirably carries two depending flanges between which a body bolster is embraced so that movement of the tank with respect to the body bolster is prevented. This anchorage of the tank to one of the body bolsters is desirably strengthened by fastening the flanged structure, carried by the tank, to the center sills of the underframe whereby vertical displacement of the tank with respect to the underframe is avoided, though I do not wish to be limited to this supplemental characteristic of the anchorage of the tank to the underframe.

I will explain my invention more fully by reference to the accompanying drawings showing the preferred embodiment thereof and in which Figure 1 is a longitudinal elevation of a tank car constructed in accordance with my invention; Fig. 2 is a perspective view of the preferred form of tank anchoring structure; Fig. 3 is a view on line 3 3 of Fig. 1; Fig. t is a view on line 4 4 of Fig. 1; Fig. 5 is a view of a filler block; Fig. 6 is a view on line 6 6 of Fig. 3; Fig. 7 is a bottom view illustrative of the anchoring device, part of the tank being shown also in this figure; and Fig. 8 is a view on line 8 8 of Fig. 3.

Like parts are indicated by similar characters of reference throughout the different figures.

Two main parts of the car structure are the tank 1 and the underframe which is inclusive of the center sills which are supported by body bolsters 3 that in turn are mounted to swing upon truck bolsters that are mounted upon car wheels 5, belonging to wheel trucks at the forward and rear ends of the under-frame, the type of ui'n'lerfralnc illustrated being well known to those skilled in the art but to the ennployment of which underframe I do not wish to be limited in practising my invention. The body bolsters 3, in the type of ui'lderframo illnstratinl, are of hollow dian'iond shape and embrace the center sills 9 to which thebody bolsters are riveted. The anchorage for the tank is preferably in theforrn of a casting that includes the tank seat 6 conforming in curvature to the tank and in which the bottom of the tank is received, rivets 7 serving to hold the tank and its anchorage in assembly. The tank seat is provided with laterally project ing wings 8 that are also riveted to the bottom of the tank and which wings are provided for the purpose of enlarging the area of engagement of the tank with its seat. The main portion 6 of the tank seat is provided with pedestals 9 cast integrally with the tank seat, these pedestals being riveted to the top flange of the center sills as indicated at 10. The anchorage casting also inclinles transversely disposed depending flanges 11 for receiving a portion of the body bolsters therebetween, the body bolster having snug fit in the space between the flanges 11, whereby the tank is prevented from moving longitudinally of the car with respect to the body bolster to which it is anchored. The body bolster illustrated is formed of charm cl iron and when thus formed I desirably insert a filler block 12 between the tank seat 6 and the body bolster, this filler block being received between the flanges of the upper channel iron of the body bolster. This filler may be riveted to the tank seat and also to the tank itself. The rivets by which the tank is secured to its seat and the seat sccured to the center sills serve to prevent the tank from rising where it is anchored to a body bolster, though an anchoring tank band 13 may also be employed in the neighborhood of this body bolster, if desired. A tank seat is also provided at the other end of the tank car, parts of this tank seat structure that are similar to the tank seat of the Cir structure before described being given similar characters of reference excepting that such character of reference have prime exponent marks added thereto. lhe assembly of the second tank seat with the underframe of the car is effected by the body bolster 3 entering between the flanges 11 and also by the rivets 10 that unite the pedestals 9 with the center sills 2. In order to permit the tank to expand and contract the tank is free to slide upon the seat 6 being desirably unsecured thereto by rivets in which case the tank band 13 would be employed to keep the tank from rising from its seat 6 The additions to the under-frame structure which are required by my invention for the purpose of effecting the proper assembly of the tank therewith are reduced to a minimum while at seats take part in maintaining both body bolsters in their proper relation to the center sills, a structure being produced having advantages that will be appreciated by those skilled in the art.

While I have herein shown and particularly described the preferred embodiment Copies of this the same time the tank patent may be obtained for five cents each, by addressing the Washington, I). 0.

of my invention I do not wish to be limited to the precise details of construction shown as changes may readily be made without departing from the spirit of my invention, but having thus described my invention I claim as new and desire to secure by Letters Patent the following A tank car structure including wheel trucks at its ends; an underframe having body bolsters swingingly supported upon said trucks; a tank; transverse flanges depending from the bottom of the tank and between which one of said body bolsters is snugly received to prevent longitudinal movement of the-tank at said body bolster in both directions; and a seat for the tank at the other end of the car upon which the tank may slide to permit of its expansion and contraction.

In witness whereof, I hereunto subscribe my name this twenty-first day of October, A. D. 1915.

HENRY P. GROHN.

Witnesses EMIL Kminn, WVM. CAMPBELL.

Commissioner of Patents, 

